Louver blades tapered in one direction

ABSTRACT

A louver blade is provided. The louver blade according to current application is asymmetric in side view. Side view of the louver blade has one sharp end. The other end of the louver blade is blunt. Center of the side view of the louver is thicker than the other part of the blade. Angle of the sharp end is in the range of 3 to 10 degree. Another embodiment of the current application is a louver blade tapered in one direction.

1. FIELD OF THE INVENTION

Current application relates with louver blades, especially with louver blades having asymmetric side views.

2. RELATED PRIOR ARTS

U.S. Pat. No. 6,959,961 to Eiermann, U.S. Pat. No. 6,923,250 to Hegg, et al., U.S. Pat. No. 6,907,919 to Zhang, U.S. Pat. No. 6,830,09 to Hintennach, et al., U.S. Pat. No. 6,814,659 to Cigelske, Jr., U.S. Pat. No. 6,805,193 to Hu, et al. U.S. Pat. No. 6,705,747 to Caferro, et al., U.S. Pat. No. 6,672,376 to Shembekar, et al., U.S. Pat. No. 6,626,560 to Caferro, et al. U.S. Pat. No. 6,468,151 to Darcey, U.S. Pat. No. 6,425,210 to Ricci, U.S. Pat. No. 6,250,012 to Ricci, U.S. Pat. No. 6,155,056 to Sampath, et al., U.S. Pat. No. 6,128,857 to Morgan, et al., U.S. Pat. No. 5,782,051 to LaVoie, U.S. Pat. No. 5,730,214 to Beamer, et al., U.S. Pat. No. 5,709,602 to Onodera, U.S. Pat. No. 5,591,079 to Saida, U.S. Pat. No. 5,560,147 to Ashida, et al., U.S. Pat. No. 5,528,478 to Degelmann, U.S. Pat. No. 5,520,579 to Saida, U.S. Pat. No. 5,480,350 to Naruse, U.S. Pat. No. 5,385,031 to Kizawa, et al. U.S. Pat. No. 5,369,931 to U.S. Pat. No. 5,255,486 to Emmerson, U.S. Pat. No. 5,251,814 to Wang U.S. Pat. No. 5,203,394 to Hailey. U.S. Pat. No. 5,146,970 to Danieli, U.S. Pat. No. 5,048,253 to Olsen, U.S. Pat. No. 5,038,843 to Sommerfeld, U.S. Pat. No. 5,020,276 to Zittell, U.S. Pat. No. 4,999,037 to Albritton, et al., U.S. Pat. No. 4,938,445 to Medley, U.S. Pat. No. 4,936,369 to Darner, U.S. Pat. No. 4,915,023 to Porter U.S. Pat. No. 4,913,214 to Ming, U.S. Pat. No. 4,899,491 to Okumoto U.S. Pat. No. 4,892,322 to Koza, et al., U.S. Pat. No. 4,875,388 to Bouvot, U.S. Pat. No. 4,850,138 to U.S. Pat. No. 4,841,421 to Watanabe, et al., U.S. Pat. No. 4,840,113 to Mueller, U.S. Pat. No. 4,813,469 to Freitag, et al., U.S. Pat. No. 4,738,191 to Porter, U.S. Pat. No. 4,662,085 to Russo, et al., U.S. Pat. No. 4,643,081 to Vicinanza, et al., U.S. Pat. No. 4,632,021 to Bolton, et al., U.S. Pat. No. 4,580,624 to Ishida, et al., U.S. Pat. No. 4,557,740 to Smith, U.S. Pat. No. 4,497,241 to Ohkata, U.S. Pat. No. 4,493,342 to Bachmann, U.S. Pat. No. 4,489,709 to Balzer, U.S. Pat. No. 4,452,024 to Sterriker, et al., U.S. Pat. No. 4,429,354 to Garnett, U.S. Pat. No. 4,409,960 to Balzer, U.S. Pat. No. 4,368,605 to Ulrich, U.S. Pat. No. 4,319,898 to Maierhofer, U.S. Pat. No. 4,310,993 to White, U.S. Pat. No. 4,268,897 to Schierwagen, et al., U.S. Pat. No. 4,263,842 to Moore, U.S. Pat. No. 4,064,670 to Lichtenwald U.S. Pat. No. 4,059,754 to Lewin U.S. Pat. No. 4,023,309 to Backward, U.S. Pat. No. 4,021,945 to Sussman U.S. Pat. No. 3,977,311 to Felter and U.S. Pat. No. 3,943,744 to Marsh, et al. illustrate louver for many purposes.

However, none of them illustrates a louver that has asymmetric side view shown as in the current application.

SUMMARY OF THE INVENTION

Louver is applied to many air circulation systems. However, the entire prior louver introduced is just a plate or some of them are complex shape. None of the prior louver is asymmetrically designed. It is purpose of the current application to provide louver blade that has asymmetric side view. A louver blade is provided. The louver blade according to current application is asymmetric in side view. Side view of the louver blade has one sharp end. The other end of the louver blade is blunt. Center of the side view of the louver is thicker than the other part of the blade. Angle of the sharp end is in the range of 3 to 10 degree. Another embodiment of the current application is a louver blade tapered in one direction.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the first embodiment of the one side tapered louver blade of the current application.

FIG. 2 is a side view of the first embodiment of the one side tapered louver blade of the current application.

FIG. 3 is a perspective view of the second embodiment of current application, asymmetric side viewed louver blade.

FIG. 4 is a side view of the second embodiment of current application, asymmetric side viewed louver blade.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

FIG. 1 is a perspective view of the first embodiment of the one side tapered louver blade (1) of the current application. Width (2) of the blade is one of 2.5 inches, 3.5 inches, 4 inches, 4.5 inches, 5.5 inches, and 6.5 inches. Length (3) of the blade is adjusted according to the width of a louver case to which the blade (1) is installed.

FIG. 2 is a side view of the first embodiment of the one side tapered louver blade (1) of the current application. Angle (4) between the upper surface (1-U) and the lower surface (1-L) of the blade (1) changes from 3 degree to 10 degree depend on the width of the blade (1). Thickness (5) of the blunt side is 0.5 inch.

FIG. 3 is a perspective view of the second embodiment of current application, asymmetric side viewed louver blade (6). Width (7) of the blade is one of 2.5 inches, 3.5 inches, 4 inches, 4.5 inches, 5.5 inches, and 6.5 inches. Length (8) of the blade is adjusted according to the width of a louver case to which the blade (2) is installed.

FIG. 4 is a side view of the second embodiment of current application, asymmetric side viewed louver blade (6). One side of the side view of the second embodiment blade (6) is sharply tapered. Angle (8) between the top surface (6-U) and lower surface (6-L) of the tapered side change from 3 degree to 10 degree depend on the width of the blade (6). Thickness (9) of the blade reaches 0.5 inch at the center of the width of the blade (6). Then the surfaces of (6-U) and (6-L) curved smoothly and meet at the other end of the blade (6). 

1. One side tapered louver blade having; width of 2.5 inches, and an angle of 3 degree between upper surface and lower surface of the blade, and thickness of 0.5 inch at blunt side.
 2. One side tapered louver blade of claim 1, wherein the width is 3.5 inches.
 3. One side tapered louver blade of claim 1, wherein the width is 4 inches.
 4. One side tapered louver blade of claim 1, wherein the width is 4.5 inches.
 5. One side tapered louver blade of claim 1, wherein the width is 5.5 inches.
 6. One side tapered louver blade of claim 1, wherein the width is 6.5 inches.
 7. One side tapered louver blade of claim 1, wherein the angle is 4 degree.
 8. One side tapered louver blade of claim 1, wherein the angle is 5 degree.
 9. One side tapered louver blade of claim 1, wherein the angle is 6 degree.
 10. One side tapered louver blade of claim 1, wherein the angle is 7 degree.
 11. One side tapered louver blade of claim 1, wherein the angle is 8 degree.
 12. One side tapered louver blade of claim 1, wherein the angle is 9 degrees.
 13. One side tapered louver blade of claim 1, wherein the angle is 10 degrees.
 14. Asymmetric side viewed louver blade having; width of 2.5 inches, and an angle of 3 degree between upper surface and lower surface of the blade at one side, and thickness of 0.5 inch at the center of the width of the blade.
 15. Asymmetric side viewed louver blade of claim 14, wherein the width is 3.5 inches.
 16. Asymmetric side viewed louver blade of claim 14, wherein the width is 4 inches.
 17. Asymmetric side viewed louver blade of claim 14, wherein the width is 4.5 inches.
 18. Asymmetric side viewed louver blade of claim 14, wherein the width is 5.5 inches.
 19. Asymmetric side viewed louver blade of claim 14, wherein the width is 6.5 inches.
 20. Asymmetric side viewed louver blade of claim 14, wherein the angle is 3 degree.
 21. Asymmetric side viewed louver blade of claim 14, wherein the angle is 4 degree.
 22. Asymmetric side viewed louver blade of claim 14, wherein the angle is 5 degree.
 23. Asymmetric side viewed louver blade of claim 14, wherein the angle is 6 degree.
 24. Asymmetric side viewed louver blade of claim 14, wherein the angle is 7 degree.
 25. Asymmetric side viewed louver blade of claim 14, wherein the angle is 8 degree.
 26. Asymmetric side viewed louver blade of claim 14, wherein the angle is 9 degree.
 27. Asymmetric side viewed louver blade of claim 14, wherein the angle is 10 degree. 